Improvement in sewing-machine motors



ZSheets-Sheet 1 S. ARTLEY, OLE BERG & H. DI'ETERLEA.

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N. PETERS, FHOTO-LITHOGRAPHER. WASHINGTON. D C.

. 2 Sheets -Shet 2. S. ARTLEY, OLE BERG 8!. H. DIETERLEA SEWING-MACHINEMOTOR. No.189,010. Patented April 3, 1877.

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I I v N PETERS, PNOTO-LITHOGRAPHER, WASHXNGTUN D C SYLVESTER -ARTLEY,OLE BERG,- AND I HENRY DIETERIJEAY, OF oHIoAeo, ILLINOIS; SAID BERG ANDDIETERLEA 'ASSIGNORS TO- sun) nn'rnnr, H

IMPROVEMENT m SEWING-MACHINE Morons,

Specification-forming part of Letters Patentllo. 189,010, dated April3,1377; application filed April 29, 1876. l'

To all whom'z't may concern Be it known that we, SYLvEsTER LARTLEY, OLEBERG, and HENRY DIETERLEA, of Ohicago, in'the county of Oookand State ofIlli nois, have invented anew and useful Improvement in Sewing-MachineMotor, which is fully described in the following specification,reference being had to the acco'mpanyin gdrawin gs, inwhich- 1 Figure 1represents a perspective-view of a sewing-machine stand with our motorattached. Fig. 2 represents a section of the band-wheel andclutch-wheels, showing ashafton which they are placed with a part of thestand to which it is attached. Fig. 3 shows one side of the band-wheelwith the clasping clutch or dog. Fig. 4 shows the opposite side of thesame wheel, with a clutch. Fig. 5 shows the side view of theclutch-wheel which carries the eccentric clasping-clutch. Fig. 6 showsthe side view of the wheel that carries the eccentric clutch and Fig. 7shows the detached view of a sewingmachine treadle with bracketattachments for converting it into one of our treadles.

Our invention consists in the construction of the treadle, also in theclasping-clutch, and

in the combination of the clutches on each side of the wheel, so thatone acts to turn the wheel when the other ceasesaction upon the thewheel; and, also, in the combination of the treadle and endless bandwith these double clutch wheels or pulleys, all as hereinafter fullyset.forth and described.

In the accompanying drawings, A represents any ordinary sewing-machinestand. B is our treadle, and C an endless belt, which communicatesmotion from the treadle to the clutch or dog wheels. D is a treadle nowin use on some of the sewing-machines.

We have made attachments, which are shown in Fig. 1 as attached to thetreadle D. E is an attachment connected to the treadle in place of the'pitman. F is also a bracket attachment which is secured to the treadle,and made in such shape as to extend out therefrom to the side of thetreadle about as far from its pivot on one side as the attachment E ison the other side.. By these attachments we convert any ordinary treadleinto our treadle B. y

Gr isa spindle on which the band-wheel of the machine revolves. H isthe'band-wheel; This band-wheel has a projecting annular flange, I, ononeside, and an annularrecess, J, on its other side. K' is a pulleyorclutchwheel. Lis alsoa pulley or clutch wheel. M is a clasping-clutch,whichis placedupon the face ofthe pulley K, and is held in position by aspring, N. It has an eccentric hearing, which is a projecting sleeve, 0,upon the clutch-wheel K. P is a double clutch, which surrounds theeccentric bearing, which is a sleeve, Q, projecting upon the center ofthe pulley L. This double clutch P is so arranged upon its eccentricbearing as to fit Within the recess J in such a manner that it will turnwithin the recess when the pulley L is turned in one direction, but whenturned in the opposite direction the eccentric sleeve causes its ends toproject and bear firmly against the rim on the wheel H, and turn thewheel with it.

The clasping-clutch M is so arranged upon its eccentric bearing, thatwhen its pulley K I is turned in one direction its clasping prongs claspthe annular flange I, and turn the Wheel H. These pulleys K and T2 arearranged on the opposite sides of the wheel H in such a manner that theyalternately turn it, as above described, so as to give it a constantrevolution in the same direction, while the pulleys vibrate back andforth, thus changing a vibratory motion to a rotary motion without acrank.

The endless belt 0 passes through each arm of the treadle B, and overeach of the gr0ovepulleys K and L. We preferably make these .pulleys Kand L with screw-shaped grooves, so as to keep the band separatedwherever it crosses. It will be observed that the pulleys K and L, andtheir clutches with which they are connected, may not necessarilyoperate directly upon the band-wheel H, because the same result would beaccomplished by attaching the wheel H to a sleeve or 'a revolvingspindle, to which the band wheel could be rigidly secured, so as torevolve with it.

The endless band yields, so as to keep equal tension from both pulleys,and we also communicate power from two points of the treadle, and haveno dead point from which it is necessary to raise the treadle from, inorder to start the machine. We consider that adoublepron ged clutchplaced upon an eccentric hearing, and made in one piece, as shown in thedrawings, is new. And we also consider that the clasping-clutch,constructed substantially as shown, and operated by an eccentrichearing, is new. We contemplate using either kind, but we do not wish tobe limited to our particular kinds of clutches, so far as the in ventionof placing a clutch on each side of the wheel H is concerned, andoperating the same with pulleys.

Having thus fully described the construction and operation of ourinvention, what we claim, and desire to secure by Letters Patent, isy 1. The centrally-pivoted treadle B, in combination with the bracketattachments E and F, arranged one on each end of the treadle,substantially as and for the purpose set forth.

2. The centrally-pivoted single treadle B, in combination with theendless belt 0, and 21% pulleys K and L, substantially as speci- 3. Thepulleys K L and clutches M 1?, constructed and arranged,as described, tofit one upon the inside of one pulley, and the other on the outside ofthe other pulley in combination with the eccentrics O and Q, and thedrive-wheel H, substantially as and for the purpose set forth.

4. A double-pronged clutch, having a central opening, and twobearing-points at some distance apart, in combination with an eccentricbearing, substantially as shown and described.

5. The wheel H provided with a flange, projecting from one side thereof,in combination with the clutch P constructed as described, to clasp thewheel upon the outside of said flange, substantially as shown and setforth.

L. M. HARRIS.

